David Rimer / MCP23016

Basic library to interface to a Microchip MCP23016 I/O expander using I2C

Testing code to blink 2 lights

#include "mbed.h"
#include "MCP23016.h"

MCP23016 PortExpand(D4, D5, 0);
DigitalOut myled(LED1);

int main() {
    PortExpand.pinMode(0, DIR_OUTPUT);
    PortExpand.pinMode(8, DIR_OUTPUT);
    while(1) {
        PortExpand.digitalWrite(0, 1);
        PortExpand.digitalWrite(8, 0);
        myled = 1; // LED is ON
        wait(1); // 200 ms
        PortExpand.digitalWrite(0, 0);
        PortExpand.digitalWrite(8, 1);
        myled = 0; // LED is OFF
        wait(1); // 1 sec
    }
}

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